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Summary of Contents for Flowserve Logix 420
- Page 1 USER INSTRUCTIONS Installation Logix ® Operation Digital Positioner Maintenance FCD LGENIM0106-07-AQ– 10/15 Safety Manual Experience In Motion...
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Page 2: Table Of Contents
14.1 TROUBLESHOOTING GUIDE MOUNTING TO NAMUR VALVES 14.2 STATUS CODE INDEX 6 TUBING 14.3 STATUS CODE DESCRIPTIONS DETERMINE AIR ACTION 14.4 HELP FROM FLOWSERVE CONNECT SUPPLY PORT 15 POSITIONER DIMENSIONS VENTED DESIGN 15.1 POSITIONER DIMENSIONS PURGING 16 HOW TO ORDER 7 ELECTRICAL CONNECTIONS 16.1 POSITIONERS... -
Page 3: Using This Document
420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 1 General Information 1.3 Protective Clothing FLOWSERVE positioners use high pressure gas to operate. Use eye 1.1 Using This Document protection when working around pressurized equipment. Follow proper procedures for working with natural gas if it is used. -
Page 4: Basic Operation
The Logix 420 digital positioner is an electronic and pneumatic closed- FLOWSERVE provides pinch-point-protection in the form of cover loop feedback instrument. Figure 1 shows a schematic of a Logix 420 plates, especially where side-mounted positioners are fitted. If these... -
Page 5: Outer Loop
• Actuator is tubed and positioner is configured air-to-open. The Logix 420 uses a two-stage, stem-positioning algorithm. The two Given these conditions, 12 mA represents a Command source of 50 stages consist of an inner-loop (pilot relay control) and an outer-loop percent. -
Page 6: Specifications
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 2 SPECIFICATIONS 2.4 Pneumatic Output Table 4: Pneumatic Output 2.1 Input Signal Output Pressure Range 0 to 100% of air supply pressure. Single Acting Relay – Table 1: Input Signal 9.06 Nm³/h @ 1.5 bar Output Air Capacity (5.33 SCFM @ 22 PSI) Two-wire, 4-20 mA... -
Page 7: Hazardous Area Certifications
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 3 HAZARDOUS AREA CERTIFICATIONS Table 9: Logix 420 Series Hazardous Locations Information ATEX North America (cFMus) Explosion Proof/Flame Proof Explosion Proof FM13ATEX0097X Class I, Div 1, Groups B,C,D II 2 G... -
Page 8: Storage And Unpacking
FLOWSERVE Control valve packages (a control valve and its instru- mentation) are typically well protected from corrosion. Nevertheless FLOWSERVE products must be stored in a clean, dry environment such as an enclosed building that affords environmental protection. Heating is not required. Control valve packages must be stored on suitable skids, not directly on the floor. -
Page 9: Mounting And Installation
7. Connect the power to the 4-20 mA terminals. See section 7 the DTM. ELECTRICAL CONNECTIONS. 8. Remove main cover and locate DIP switches and QUICK-CAL/ ACCEPT button. Actuator Actuator O-ring Take-Off Take-Off Plate Take-Off Plate Screws flowserve.com Figure 2: Valtek GS and FlowTop Mounting... -
Page 10: Mounting To Namur Valves
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 5. Connect the power to the 4-20 mA terminals. See section 7 Table 10: FlowTop and GS Take-Off Plate and Pin Configurations ELECTRICAL CONNECTIONS. Plate and Pin Stroke 6. Remove main cover and locate DIP switches and QUICK-CAL/ Actuator (mm) Orientation... -
Page 11: Tubing
® 6 TUBING 6.3 Vented Design A standard Logix 420 positioner is vented directly to the atmosphere. After mounting has been completed, tube the positioner to the actuator When supply air is substituted with sweet natural gas, piping must be using the appropriate compression fitting connectors. -
Page 12: Electrical Connections
(10.0 V) therefore; this system will support the Logix 420. The Logix 420 has an input resistance equivalent to 500 Ω at a 20 mA input The Logix 420 requires that the current loop system allow for a 10 VDC current. - Page 13 5000 feet. For cable runs longer than 5000 feet, 20 AWG cable should be used. The input loop current signal to the Logix 420 digital positioner should be in shielded cable. Shields must be tied to a ground at only one end of the cable to provide a place for environmental electrical noise to be removed from the cable.
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Page 14: Connections For Intrinsically Safe Operation
7.2.5 Electromagnetic Compatibility When selecting an intrinsically safe barrier, make sure the barrier is The Logix 420 digital positioner has been designed to operate correctly HART compatible. Although the barrier will pass the loop current and in electromagnetic (EM) fields found in typical industrial environments. -
Page 15: Quick Start Instructions
20 mA for Air-To-Close.. 8.2 Local User Interface Overview The Logix 420 local user interface allows the user to calibrate, configure 4 mA – Selecting 4 mA will make the valve close when the signal is low the basic operation, and tune the response of the positioner without (4 mA) and open when the signal is high (20mA). -
Page 16: Stroke Calibration
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 8.3.6 Valve Stability Switch generally opens less than the input command. To select one of the other curve options, use the LCD menu, a Handheld or the ValveSight This switch adjusts the position control algorithm of the positioner for DTM. - Page 17 It may be necessary to set the gain switch BEFORE the Quick Cal. Very fast stroking valves may need to be at lower gains and very slow stroking valves may need to be at higher gains. flowserve.com...
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Page 18: Positioner Functions (No Display Required)
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 9 POSITIONER FUNCTIONS 9.3 Command Source Reset Performing a command source reset will reset the command source (No Display Required to analog if it has been inadvertently left in digital mode. This is done The following features can be performed using the local interface. -
Page 19: Viewing Version Numbers
Curve, MPC, or Soft Limits that have been applied and should match the Position. For example, if holding the ▲ Up button gave a G-G-R code, and holding the ▼ Down gave a Y-Y-G code then the resulting version number would be 2.12. flowserve.com... - Page 20 Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 10.1.2 Scrolling Status Messages and responds to the position command given through HART. In Out Of Service mode, the positioner is performing a calibration, signature, The Scrolling Status Message provides the following information as partial stroke test or is in a factory reset state.
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Page 21: Menu Overview
EC Major Rev Partial Stroke Test EC Minor Rev Start EC Build Date and Time Last Result Universal Rev Hardware Rev Calibration Factory Reset Stroke/Quick Calibration Language Command Input Calibration Calibration Dates English German French Spanish Portuguese Russian Turkish Italian flowserve.com... -
Page 22: Menu Features
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 10.3 Menu Features 10.2.3 Partial Stroke Test ► Partial Stroke Test 10.3.1 Status ► Start ► Status ► Last Result ► Command (mA) The Partial Stroke Test (PST) menu provides the user the ability to start ►... - Page 23 ValveSight DTM to select the curve. P-Gain, I-Gain and D-Gain are the proportional, integral, and differen- tial elements of the feedback algorithm. These gains are different for the opening and closing directions because typically responsiveness is flowserve.com different in each direction.
- Page 24 Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® Table 13: Characteristic Curve Data Final Command Characterization DIP set Characterization DIP set to “Other” Command to“Linear” Input Custom Shear- Stream Shear- Stream Linear MaxFlo Linear MaxFlo =% Valdisk Linear Valdisk =% (Default) Linear (Linear =%)
- Page 25 ► All Units ► Temperature Units NOTE: The pressure control feature of the Logix 420 functions without ► Actuator Area Units the use of pressure sensors. In the DTM, this feature is configured on ►...
- Page 26 Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 10.3.10 Configuration (Burst Mode) 10.3.13 Language ► Configuration ► Language ► Burst Mode ► English ► On/Off ► German ► French Burst Mode continuously transmits HART information. ► Spanish ► Portuguese On/Off –...
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Page 27: Hart Communication
Figure 13: ValveSight DTM Dashboard 11.2 HART 475 Handheld Communicator The Logix 420 digital positioner supports and is supported by the HART 475 Handheld Communicator. The Device Description (DD) files can be obtained from the HART Communication Foundation or from your Flowserve representative. -
Page 28: Requirements For Safety Integrity
12.2 Safety Function 12.6 Maximum Achievable SIL The Logix 420 positioner moves to fail-safe state upon the removal of The Flowserve 420 Valve Positioner covered by this safety manual analog input power (less than 3.6 mA) -
Page 29: Proof Testing
The objective of proof testing when used in low demand mode of opera- 3. View the results of the PST via the LCD menu, DD, or DTM. tion is to detect failures within the Flowserve 420 Valve Positioner and its associated sensors and actuators that may not be detected by the 4. -
Page 30: Maintenance And Repair
5. Replace the inner cover by inserting the 6 retaining screws. 6. Calibrate. 13.2 Required Tools and Equipment The Logix 420 digital positioner has modular components that can be replaced using these tools: Hall Sensor Connector... -
Page 31: Troubleshooting
ValveSight and recalibrate. LCD backlight flickering 1. The backlight uses any residual power not used by other func- 1. Fluctuations in the LCD backlight are normal. No action required. or dim. tions of the circuitry. flowserve.com... -
Page 32: Status Code Index
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 14.2 Status Code Index Table 16: Status Code Index Status Code Name Blink Code Position Range Too Small RGGY Command Input Below ADC Range RGGG Position Sensor Above ADC Range RGGY Command Input Above ADC Range RGGG Command Input Calibration in Progress... -
Page 33: Status Code Descriptions
4-20 mA signal by using a handheld, the Dashboard page of the DTM, or performing a manual Command Reset. Perform the Command Reset by holding both the UP and DOWN buttons and briefly pressing the QUICK-CAL/ACCEPT button. flowserve.com... - Page 34 Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® GRGY YGGY STROKE CALIBRATION IN PROGRESS PILOT RELAY CYCLES WARNING SETTING INNER LOOP OFFSET PILOT RELAY TRAVEL WARNING COMMAND INPUT CALIBRATION IN PROGRESS VALVE CYCLES WARNING VALVE TRAVEL WARNING Description: A calibration sequence is in progress. The inner loop offset is an important step of the stroke calibration.
- Page 35 The minimum angle of rotation should be assembly. Maintain a clean, water-free air/gas supply. greater than 15 degrees. Briefly pressing the QUICK-CAL/ACCEPT button acknowledges a small range and the positioner will operate using the short stroke calibration if otherwise a good calibration. flowserve.com...
- Page 36 Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® RGGR RGRY INNER LOOP OFFSET TIME OUT STROKE SHIFT Description: During calibration the Inner Loop Offset (ILO) value did not Description: The 0% and 100% valve positions have both shifted in the settle.
- Page 37 Hall sensor circuit has failed. assembly or the sensor has failed. Possible Solutions: Check the internal wiring connections. Replace the Possible Solutions: Check the feedback arm linkage. Recalibrate. If the pilot relay. problem persists return the unit for repair. flowserve.com...
- Page 38 Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® RRRY PIEZO VOLTAGE HIGH ALARM Description: The voltage driving the piezo is above the alarm limit. This could indicate an error with the relay or the main board. The positioner may still be functioning, but have reduced performance under some circumstances.
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Page 39: Help From Flowserve
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 14.4 Help From Flowserve 14.4.1 Phone Support Over-the-phone troubleshooting is often available for positioner issues. Should your positioner be experiencing problems, or if you have ques- tions that are not answered by this manual, feel free to call your local sales representative or a Quick Response Center (QRC). -
Page 40: Positioner Dimensions
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® 15 POSITIONER DIMENSIONS 15.1 Positioner Dimensions Figure 17: Overall Dimensions... -
Page 41: How To Order
16 HOW TO ORDER 16.1 Positioners Table 17: 420 Positioner Configurations Selection Description Code Example Base Model Logix 420 Communications HART 6 (HART 7 Configurable) Diagnostics Standard (Basic Functionality) Certifications General Purpose Certifications Intrinsically Safe, IP66, Explosion Proof Cl I Div 1 Gr. B,C,D, Ex d IIB+H2 Certifications Housing: Aluminum;... -
Page 42: Index
Logix 420 Digital Positioner FCD LGENIM0106-07-AQ – 10/15 ® INDEX Air Action Switch · 15 Main Board · 30 Air Supply · 6 Maintenance · 8, 29, 30 Auto Tune Switch · 16 MaxFlo Rotary Valves · 10 Minimum Close Time · 23 Minimum Open Time ·... - Page 43 Troubleshooting · 12, 31 Tubing · 11 Tuning · 18, 23 Valtek GS · 9 Valve Cycles · 22 Valve Stability Switch · 16 Valve Travel · 22 ValveSight DTM · 6, 27 Vented Design · 11 Version Numbers · 19, 26 flowserve.com...
- Page 44 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide India 560 066 variety of industrial service conditions.
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